Some embodiments are directed to an assembly having a first cardboard assembly member, a second cardboard assembly member and a connection arrangement. The connection arrangement can connect together the first and second cardboard assembly members, and can include a set of first connector elements and a set of second connector elements. Each of the first connector elements can have a first segment fixedly received within the first assembly member, and a second segment that projects from the first assembly member and received within the second assembly member, the second segment extending along a first longitudinal axis parallel to two parallel faces of the second assembly member. Each of the second connector elements can extend along a second longitudinal axis normal to the first longitudinal axis, and be received within the second assembly member and pass through the two parallel faces of the second assembly member.